Puddling and heating furnace



(No Model.)

B. C. LAUTH. Puddling and Heating Furnace.

Patented April 19,1881.

NJETERS. PHOTQ-UTHCGRAPHER, WASHINGTONv n O.

V UNITED STATES PATENT OFFICE.

BERNARD O. LAUTH, OF PHILADELPHIA, ASSIGNOR OF ONE-HALF TO WILLIAMSTUBBLEBINE, OF BETHLEHEM, PENNSYLVANIA.

PUDDLING AND HEATING FURNACE.

SPECIFICATION forming part of Letters Patent No. 240,429, dated April19, 1881. Application filed December 14, 1880. (No model.)

To all whom it may concern:

Be it known that I, BERNARD O. LAUTH, a citizen of the United States,residing in Philadelphia, Pennsylvania, have invented certainImprovements in Paddling and Heating Furnaces, of which the following isa specification.

My invention relates to an improvement in the structure attached topaddling and heating furnaces by William Stubblebine, and described inReissued Patent No. 9,140, granted to said Stubblebine and B. O. Lauth,April 6, 1880, and in Patent N 0. 226,368, granted to the same partieson same date, the object of my invention being to prevent the partitionI 5 between the fire-chambers and the gas and air chamber described inthe said patents from being impaired by the action of the heat to whichit is subjected.

In the accompanying drawings, Figure 1 is a vertical section ofsufficient of a paddling or heating furnace to illustrate my inventionFig. 2, a sectional plan on the line 1 2, and Fig. 3 a perspective viewof one of the bricks used in making the partition between the fire- 2 5chambers and gas-chamber.

A represents partof the fire-chamber of a heating or puddling furnace, Bpart of the ordinaryfire-bridge, and D part of the roof of the furnace.

ure, Gr, closed at the top and containing a gas and air chamber, H,which communicates with the said fire-chamber through openings in apartition, I. A bridge-wall, (0, extends across the chamber, and thereis a partly perforated plate, 12, into the space between which and thetop of the structure is introduced a blastpipe, d.

The above description applies to the invention of the said Stubblebinefor intensifying the heat of the furnace, by causing a portion of theproducts of combustion to pass upward in the direction of the arrowsinto the chamber H, to be there mixed with air under press- 5 ure andforced with the air into the fire-chamber near the bridge-wall.

In carrying this invention into effectI have found that the portion ofthe structure which constitutes the perforated partition I, interveningbetween the fire-chamber A and the gas and air chamber H, when made ofsolid brick-work, is soon injured by the action of the heat.

Above the fire-chamber is erected a struct- In order to prevent therapid destruction of the partition I between the fire-chamber and 5 5gas and air chamber, I make the said partition in the following manner:Wherever a hole has to pass through the partition I use a brick,

K, through which passes a vertical opening,

these bricks being about fifteen inches high A and of a thickness andwidth to accord with ordinary fire-bricks h, which are about nine incheslong, and of which the remainder of the partition is composed. Theperforated bricks are preferably laidin the manner shownin Fig. 6 2-thatis, in four rows, two on each side of the Wall a and at about thedistance apart from each other substantially as shown. The usual bearersemployed in supporting the brick roofs of ordinary furnaces are used inconnection with the perforated partition. The partition thus constructedis completed by a covering of thin bricks or tiles n, through whichextend openings coinciding with those in the large bricks K. A seriesofcommunicating cells, to, closed above and below, are thus made withinthe partition, and air admitted at any suitable openings can circulatefreely through the cells in contact with the large bricks and with thecovering tiles and shorter bricks, thereby 8o maintaining the partitionat sucha temperature that it can effectively resist the destructiveaction of the intense heat to which it is subjected.

1 claim as my invention- 8 l. The combination of the fire-chamber A andthe gas and air chamberH ofa puddling or heating furnace with apartition, I, within which are a series of spaces communicating with theexternal air, but having no commu- 9c nication either with thefire-chamber or gaschamber, substantially as set forth.

2. The within-described perforated partition, consisting of longperforated bricks K, shorter bricks h, and a covering, it, all beingcombined 5 substantially as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

BERNARD O. LAUTH.

Witnesses HENRY HoWsoN, J r., HARRY SMITH.

